After the rather dismal first release of the only mainstream car manufacturer backed game for Apple's iPhone, Audi, it would seem, have listened to the feedback of iPhone users across the world. The new update of their Audi A4 Driving Challenge game, which uses the tilt function of the iPhone to control the direction of driving sees a lot of the initial issues users had with the game fixed. Gone are the skittish controls which would see players zig zagging across the sometimes narrow track. In their place is an updated control which is a lot more fluid and, more importantly, has a sensitivity control within the games setting menu to further fine tune players reactions.

Also added are three extra bonus cars; Audi A4 2.0T, Audi A4 3.2 V6 Quattro and for those speed freaks amongst us - the Audi R8 - which are unlocked by completing various time locked bonuses There are four tracks in all, each with an increasing step up in difficulty.

Graphically there are also some detail changes such as a heads up map display which relays the players position on track - which comes in really handy as you can anticiapte corners. To counter the issues of not knowing where the track is going! To help judge the steering angle a neat little flat bottomed steering wheel is also added across the display bar, which reacts depending on how much turn you feed the iPhone via the tilt facility. Great!

The in game menus and track selection screens have all had a make over, too.

With the changes in place the game now has that 'just one more go' feeling - which is always a good sign for a pick up and go game like the A4 Driving Challenge.

The game update is available from Apple's iPhone App Store, located on the home screen of your iPhone. Alternatively you can also download the update from iTunes on your PC/Mac.